9956ef4622
Non-editable prop collection items would always fall back to the slower loop in `rna_raw_access`. This patch changes `RNA_property_collection_raw_array` to only fail with non-editable items when intending to set values, allowing for the faster raw array access to occur when reading values in `rna_raw_access`. This brings the Python API `bpy_prop_collection.foreach_get` performance of `Mesh.vertex_normals`/`polygon_normals`/`corner_normals` up to the same speed as generic `FLOAT_VECTOR` attributes with the same domains. Given a mesh with 393216 corners: Using `foreach_get` with the "vector" prop and a compatible buffer object: - Corner vector attribute: ~0.9ms - Corner normals (before): ~7.9ms - Corner normals (after): ~0.9ms Using `foreach_get` with the "vector" prop and a Python list: - Corner vector attribute: ~11.0ms - Corner normals (before): ~18.0ms - Corner normals (after): ~11.0ms Pull Request: https://projects.blender.org/blender/blender/pulls/114063
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